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Nitrous Discuss dry, wet, and direct port nitrous setups. How many shots can you handle?

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Old 06-27-2007, 07:52 PM   #1
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Good Exaust Piping Size for Nitrous

I was wanting to know what would be a good size piping for my exaust system with future plans for a 50-75 shot of nitrous...ive heard that the exaust piping needs to be enlarged for better exaust flow with nitrous and plus its time to replace my pipes on my cat-back system?
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Old 06-27-2007, 09:04 PM   #2
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2.5 inch should do it
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Old 06-27-2007, 09:38 PM   #3
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Agreed 2.5 system should do nicely.
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Old 06-27-2007, 10:36 PM   #4
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Agree w/ the above opinions.

Question for you though: Do you have headers yet? If not, that should be your main concern first.
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Old 06-29-2007, 07:18 PM   #5
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Quote:
Originally Posted by 95MaximaDriver
I was wanting to know what would be a good size piping for my exaust system with future plans for a 50-75 shot of nitrous...ive heard that the exaust piping needs to be enlarged for better exaust flow with nitrous and plus its time to replace my pipes on my cat-back system?

Full headers and 3" pipe works OK for me, for a dual-stage 150-shot ....

3" catback - warpspeed..
http://i48.photobucket.com/albums/f2.../3inchback.jpg

Custom OBX headers w/3" cutout:
http://i48.photobucket.com/albums/f2...s/Dscn2036.jpg


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http://i48.photobucket.com/albums/f2...3/Fscn1518.jpg

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Old 07-05-2007, 07:26 PM   #6
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How does the 3" feel with normal driving?
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Old 07-05-2007, 07:47 PM   #7
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Why not just get basic 2.5 piping, and put a cutout right at the ypipe collector? even n/a i gained 7hp from opening it, with nitrous, well its a given youll get alot of power down.
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Old 07-05-2007, 07:53 PM   #8
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Quote:
Originally Posted by XeroX
How does the 3" feel with normal driving?
Feel? just fine, I guess.. I've had the 3" system with Y-pipe for about 3 years now. It went to Maxus 2005 and 2006, and went to various drag strips as well.

It has a deeper throatier sound than other systems I've heard. Now, with the headers, the sound is - well - like it's got headers...
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'99 GXE, Tune-by-Tape MAF mod, 3.5L w/cams, SSIM, 255Walbro,AERO FPR, VLSDauto, Edge TC, DR-mod, Shift_Fast, dual-B&M cooler, JClawbars, dual-NX nitrous, dual heated15lb bottles, OBX headers, 3"Warpspeed exhaust, PLXR-300 wideband, IlluminasStrut/springs, 24.5"M&H, ProgressRSB, HawkHPS, Clarion50Wx4 head w/Alpines, Fosgate sub. Spare tire+jack,3300 lb car. 355WHP-dyno.

13.158 3.0 time slip
http://i48.photobucket.com/albums/f2...3/Fscn1518.jpg

12.394 @113.22 w/3.5
http://i48.photobucket.com/albums/f2...9/DSCN0527.jpg
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Old 07-05-2007, 09:44 PM   #9
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can you run nitrous with stock headers and exhaust? i would def upgrade my plugs, but can I run it w/o upgrading exhaust size & headers? I love the sound of an aftermarket exhaust, but the attention it draws is not my favorite
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Old 07-05-2007, 10:09 PM   #10
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Quote:
Originally Posted by oxygen
can you run nitrous with stock headers and exhaust? i would def upgrade my plugs, but can I run it w/o upgrading exhaust size & headers? I love the sound of an aftermarket exhaust, but the attention it draws is not my favorite
Yes, you will get better gains with a better free flowing exaust. But if your wondering if it will cause problems...no it wont...
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Old 07-05-2007, 10:09 PM   #11
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Quote:
Originally Posted by grey99max
Feel? just fine, I guess.. I've had the 3" system with Y-pipe for about 3 years now. It went to Maxus 2005 and 2006, and went to various drag strips as well.

It has a deeper throatier sound than other systems I've heard. Now, with the headers, the sound is - well - like it's got headers...
you dont experience any drop in low end tq?
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Old 07-05-2007, 10:25 PM   #12
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Quote:
Originally Posted by XeroX
you dont experience any drop in low end tq?

I never noticed any - after I updated the torge converter with a 2800-stall EDGE, it takes more rpms to move the car from a stop with normal driving, but you would expect that.

When idleing, you can feel with your hand each exhaust pulse pop out of the exhaust tip. Free flow, baby! I read about this obsession with low-end torque and big exhausts, but I don't have it, I guess. But I race the car, so maybe I'm prejudiced..... The 3" system was just fine for normal driving befoe headers - after. it's even better.
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'99 GXE, Tune-by-Tape MAF mod, 3.5L w/cams, SSIM, 255Walbro,AERO FPR, VLSDauto, Edge TC, DR-mod, Shift_Fast, dual-B&M cooler, JClawbars, dual-NX nitrous, dual heated15lb bottles, OBX headers, 3"Warpspeed exhaust, PLXR-300 wideband, IlluminasStrut/springs, 24.5"M&H, ProgressRSB, HawkHPS, Clarion50Wx4 head w/Alpines, Fosgate sub. Spare tire+jack,3300 lb car. 355WHP-dyno.

13.158 3.0 time slip
http://i48.photobucket.com/albums/f2...3/Fscn1518.jpg

12.394 @113.22 w/3.5
http://i48.photobucket.com/albums/f2...9/DSCN0527.jpg
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